QUESTION: 57

Refer to the exhibit. Which two statements about the IS-IS topology are true? (Choose two.)

R1 and R4 are Level 2 neighbors.
All four routers are operating as Level 1-2 routers.
All four routers are operating as Level 2 routers only.
All four routers are operating as Level 1 routers only.
R1 and R2 are Level 2 neighbors.

Answer(s): A,B

Refer to the exhibits. R1 and R2 are directly connected and IS-IS routing has been enabled between R1 and R2. R1 generates the above log message periodically.

Based on this output, which statement is true?

IS-IS neighbor authentication is failing for Level 2 PDUs only.
IS-IS neighbor authentication is failing for Level 2 first and then for Level 1 PDUs.
IS-IS neighbor authentication is failing for Level 1 and Level 2 PDUs.
IS-IS neighbor authentication is failing for Level 1 PDUs only.

Answer(s): D

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QUESTION: 59

Which BGP attribute is used first when determining the best path?

origin
AS path
local preference
weight

Answer(s): D

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QUESTION: 60

Refer to the exhibit. An engineer wants to authenticate the OSPF neighbor between PE-A and PE-B using MD5.

Which command on PE-B successfully completes the configuration?

PE-B(config-if)#ipospf message-digest-key 1 md5 44578611
PE-B(config-if)#ipospf authentication null
PE-B(config-if)#ipospf message-digest-key 1 md5 44578611
PE-B(config-if)#ipospf authentication key-chain 44578611
PE-B(config-if)#ipospf message-digest-key 1 md5 44568611
PE-B(config-if)#ipospf authentication null
PE-B(config-if)#ipospf message-digest-key 1 md5 44578611
PE-B(config-if)#ipospf authentication message-digest

Answer(s): D

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